Untitled

package labs;

import java.util.Arrays;
import java.util.Scanner;

public class Lab01 {

	public static int[] nums;
	
	
	public static void problem01() {
		//declaring an string array that can hold 8 elements
		String[] words = new String[8];
	
	}


	public static int[] problem02() {
		//declaring an int array that can hold 12 elements
		int[] numbers = {2, 4, 5, 8, 16, 2, -3 ,5, -9, 0, 9, 6};
		
		return numbers;
	}


	public static int problem03() {
		//returning elements to 3
		return nums [3];
		
		
		
	}


	public static int problem04() {
		//ask user for integer 
		Scanner inKey = new Scanner(System.in);
		System.out.println("Enter an integer: ");
		//if integer is in index return that number, else return -50
		int userInt = inKey.nextInt();
		int numsLength = nums.length;
		if (userInt > numsLength) {
			return -50;
		}
		return nums[userInt];
		
		
		
	}


	public static int problem05() {
		//Return the last value of the nums array.
		System.out.println(nums);
		
	
		return nums[nums.length-1];
	}


	public static boolean problem06() {
		//Return whether there are numbers larger than 10 in the nums array
		for (int i=0; i< nums.length; i++){
			if (nums[i]>10){
				return true;
			}

		}
		
		return false;
	}

//Return the number of negative numbers
	public static int problem07() {
		int negative = 0;
		for (int i=0; i< nums.length; i++){
			if (nums[i]<0){
				negative ++;
			}
		}
		return negative;
	}

//find smallest number in array
	public static int problem08() {
		int smallest = Integer.MAX_VALUE;
		for (int i=0; i< nums.length; i++){
			
			if (nums[i]<smallest){
				smallest=nums[i];
			}
		}
		
		
		return smallest;
	}
	
	
	
	
	//DO NOT mess with this method!!
	public static void main(String[] args) {
		
		populateNums();
		
		//#1
		problem01();
		
		//#2
		//This will print out the return in a default format
		System.out.println(Arrays.toString(problem02()));
		
		//#3
		System.out.println("Index #3 = " + problem03());
		
		//#4
		System.out.println("That index = " + problem04());
		
		//#5
		System.out.println("The last value = " + problem05());
		
		//#6
		if (problem06()) {
			System.out.println("There are numbers larger than 10.");
		}
		else {
			System.out.println("There are not numbers larger than 10.");
		}
		
		//#7
		System.out.println("Number of negatives = " + problem07());
		
		//#8
		System.out.println("Min = " + problem08());
		
		
	}
	
	//do not change this
	//it populates nums to a random size with random values
	public static void populateNums() {
		
		nums = new int[(int) (Math.random() * 10 + 5)];
		
		for (int i = 0; i < nums.length; i++) {
			nums[i] = (int) (Math.random() * 23 - 10);
		}
		
		
	}
	
	
	
}



Lab 2




package labs;

import java.io.File;
import java.util.Arrays;
import java.util.Scanner;

public class Lab02 {

	//#1
	//instance variables
	public static String[] color;
	public static String[] hex;
	public static boolean[] isLiked;
	
	
	
	public static void problem02() throws Exception{
		//entering the file into the code
		Scanner inFile = new Scanner(new File("src/labs/input.txt"));
		
		int numElements = inFile.nextInt();
		//arrays to use
		color = new String[numElements];
		hex = new String[numElements];
		isLiked = new boolean[numElements];
		//inputing the arrays from the file
		for (int i = 0; i < numElements; i++) {
			color[i] = inFile.next();
		}
		for (int i = 0; i < numElements; i++) {
			hex[i] = inFile.next();
		}
		for (int i = 0; i < numElements; i++) {
			isLiked[i] = inFile.nextBoolean();
		}
		
		 
	}


	public static void problem03() {
		//user enters a int
		Scanner inKey = new Scanner(System.in);
		System.out.println("Enter an integer: ");
		int userInt = inKey.nextInt();
		//prints the color of the unt, hex code, and if the editor likes it
		System.out.println(color[userInt]);
		System.out.println(hex[userInt]);
		System.out.println(isLiked[userInt]);

	}


	public static String problem04() {
		//prints the colors the editor likes
		String editorPrefer = "";
		boolean isBoolFirst=true;
	for (int i = 0; i < isLiked.length;  i++) {
		if (isLiked[i] == true) {
			if (isBoolFirst ) {
				editorPrefer += color[i];
				isBoolFirst = false;
			}
			else{
				editorPrefer +=  ", " + color[i];
			}
		}
		
		
	}
	
		return editorPrefer;
	}


	public static String problem05() {
		//user enters a color
		Scanner inKey = new Scanner(System.in);
		System.out.println("Enter an color: ");
		String hexTrue= "";
		String userColor = inKey.nextLine();
		boolean colorTrue=false;
		//checks if color is on list, if it is says the  hex code 
		for (int i = 0; i < color.length;  i++) {
			
			if (userColor.equalsIgnoreCase(color[i])) {
				hexTrue=hex[i];
				
				colorTrue=true; 
				return hexTrue.substring(1, hexTrue.length());
			}
		}
		//if color is not on list prints the following - 
		for (int i = 0; i < color.length;  i++) {
		if (!userColor.equalsIgnoreCase(color[i])) {
			return ("That color is not on the list.");
		}
		}
		return hexTrue.substring(1, hexTrue.length());
	}


	public static int problem06() {
		//says how many colors the editor likes
		int editorPrefer = 0;
		for (int i = 0; i < isLiked.length;  i++) {
			if (isLiked[i] == true) {
				editorPrefer++;
			}
		}
			return editorPrefer;
	}


	public static String problem07() {
		//new editor likes opposite of other editor, tells all the colors the editor likes
		String editorPrefer = "";
		boolean isBoolFirst=true;
	for (int i = 0; i < isLiked.length;  i++) {
		if (isLiked[i] == false) {
			if (isBoolFirst ) {
				editorPrefer += color[i];
				isBoolFirst = false;
			}
			else{
				editorPrefer +=  ", " + color[i];
			}
		}
	}
		
	
		return editorPrefer;
	}
	
	
	public static void main(String[] args) throws Exception{
		
		//#2
		problem02();
		
		//#3
		problem03();
		
		//#4
		System.out.println(problem04());
		
		//#5
		System.out.println(problem05());
		
		//#6
		System.out.println("They like " + problem06() + " colors.");
		
		//#7
		System.out.println(problem07());
		
	}
	
}